FDA Accepts Portola Pharmaceuticals BLA Resubmission

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FDA has accepted for review a Portola Pharmaceuticals BLA resubmission for AndexXa (andexanet alfa) and its use as a universal reversal agent for patients anticoagulated with an oral or injectable Factor Xa inhibitor who experience a serious uncontrolled or life-threatening bleeding event or who require urgent or emergency surgery. The agency has set a user fee review target date of 2/2/2018.

 

The original BLA was based on data from the company’s ANNEXA (Andexanet Alfa a Novel Antidote to the Anticoagulant Effects of FXa Inhibitors) studies. It also included limited efficacy and safety data from initial patients enrolled in an ongoing Phase 4 ANNEXA-4 study, an open-label confirmatory study in patients receiving apixaban, rivaroxaban, edoxaban and who present to the hospital with an acute major bleed, according to the company. The resubmission includes supplemental information primarily related to analytics and manufacturing, which was requested by FDA in a complete response letter issued to Portola 8/2016.

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